RECORD: Darwin, C. R. 1881. [annotated diagram of plant experiments] [application of acetic acid]. CUL-DAR52.F12. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed and edited by John van Wyhe 12.2025. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with the permission of the Syndics of Cambridge University Library and William Huxley Darwin. The folder CUL-DAR52F contains notes on the aggregation of chlorophyll bodies.
F12
12. 50'
(p. 2
Oct 4
12 50'
7. P.m
ill-defined grains have developed in middle of [illeg]
Cell 3
(3) 7 P.m
6. P.m' Green very pale — perhaps candle light
7. 10 P.m → Much dark granular
4
(4)
At 9. P.m. no change in form In some filament spiral bend still characteristic visible.—
Cell I
2
3→
4→
4.—4. 15' P.m
granules or sph many cells rather spherical
4. 5' [illeg] this has disappeared
4. 10' has almost but disappered
grain [sketch]—again pear-shaped 4. 10 strongly protracted
4. P.m
—I saw this contract into sphere ova 'oval
F12b
Oct 5 8. a.m
Acetic A. no effect except making cells more transparent & green brighter 8. 30' a.m. does not act on granular matter — & good deal of Chlorophyll left
[sketches] (1) (1)
(2) (2)
Oct 5' 8. a m
outline of green masses very pure
3 (3)
4 (4)
In terminal joint of existing filament still the spiral bend & much granular matter — which seem in most case deposited on walls of cells & mingled with green matter
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 7 January, 2026